door/window schedule

[SPHINX building Design]

When I do a window / door schedule, the program gives them an ID number.
e.g. W1, W2 or D1, D2 etc. as the program is smart enough to do this,
How can I get the program to insert these ID's on the floor plan /elevations. It is a bit hard to do it manually as the assignment varies from job to job and I can not find the ID by opening the door for the window or door.
thanks, Jan